Use use warnings;!!! You would have gotten at least the first of 

Useless use of concatenation (.) or string in void context
Use of uninitialized value in print

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print .", ".$xy;
      ^
      |

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The above means 

print() . ", " . $xy;

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and thus 

print($_) . ", " . $xy;

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By the way, when dumping an array, use
print Dumper \@array;
instead of
print Dumper @array;

Update: Added warning.

In reply to Re: Arrays of hashes which have arrays by ikegami
in thread Arrays of hashes which have arrays by LesleyB

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